Thanks for the hint :) A little googling found his blog which has this gem dated Oct 14th: "Following on from my last success, I'm pleased to report that I've managed not only to decompress the data, but also reassemble it into a suitable archive and write it out. It handles any non-class file, and currently, .class files that are entirely empty interfaces. So, if you've got any oversized archives of types like java.io.Serializable, this could save you literally a hundred bytes or so ..." Sounds like he's making good progress but has quite a ways to go. I'll have to go with the "JDK from a trusted source" approach I think :) Thanks again, Stuart. -- http://sab39.dev.netreach.com/